Engineering Cases

Real deployments with the numbers attached: what the original system struggled with, which fans replaced it, and the measured airflow, energy and noise outcomes. Browse LONGWELL project cases across data centers, industry, refrigeration, agriculture and OEM programs.

longwell dry-type transformer cooling solution
By longwell / August 19, 2026 / Engineering Cases

Integrated Fan Cooling for Ultra-High-Power Dry-Type Transformers

Thermal management has become the engineering challenge in dry-type tr...

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ventilation fan CE UL ETL RoHS
By longwell / August 18, 2026 / News

Ventilation Fan Certifications: CE, UL, ETL, RoHS – What Each Means?

Performance specifications like airflow, static pressure, and noise le...

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longwell centrifugal blower
By longwell / August 11, 2026 / Engineering Cases

LWDD7-5-C-EC-002 Centrifugal Blower for Air Filtration Systems

A 220V variable-speed EC centrifugal blower pushing 1980 m³/h at 317 P...

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LONGWELL RLM series commercial centrifugal plug fan
By longwell / August 10, 2026 / Engineering Cases

RLM series Commercial Centrifugal Plug Fans for HVAC OEM

Delivering 700 Pa static pressure and up to 9000 m³/h airflow, these c...

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LWPVE-1530T-01
By longwell / July 29, 2026 / Engineering Cases

LWPVE-1530T-01 Exhaust Fan for Large Industrial Ventilation

Longwell engineers a 1530mm industrial exhaust fan to deliver 51,000 m...

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LWFE3G200-102SS-02-00
By longwell / July 27, 2026 / Engineering Cases

LWFE3G200-102SS-02-00 EC Centrifugal Fan for HVAC

An OEM required a 200mm EC centrifugal fan delivering 700 m³/h at 1000...

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LWAA4E550S-5MEB-02 axial fan
By longwell / July 27, 2026 / Engineering Cases

LWAA4E550S-5MEB-02 AC Axial Fan for HVAC Condensers

Case study on an 8,755 m³/h AC axial fan for HVAC condenser units. See...

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LONGWELL AC axial fan
By longwell / July 25, 2026 / Engineering Cases

LWAA4E250S-5MYB-32-00 and LWAA4E300S-5MYB-15-00 AC Axial Fan for OEM Ventilation

An OEM required a modification of standard AC axial fans into a tube-a...

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LWBA for AHU cases
By longwell / July 25, 2026 / Engineering Cases

380V AC Centrifugal Fan for AHUs: 695 Pa High-Pressure

Developing a standardized 380V AC backward curved centrifugal fan for ...

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electronic cooling use cases
By longwell / July 22, 2026 / Engineering Cases

Custom 48V 2900 RPM Cross Flow Fan for OEM Cooling

Case study on a custom 48V DC cross flow fan from Longwell, modified t...

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